Phase Sequence Indicators

Electrical control panel with three labeled knobs (R, S, T) and two status indicators showing incorrect and correct connections.

243-12P & 244-12P – Phase Sequence Indicators

Electronic phase sequence indicators ensure correct phase rotation and the presence of all 3-phase supplies.

Incorrect or loss of phase can cause serious damage in a wide range of electrical machines.

Ship-to-shore supplies, mobile generators and remote installations are particularly vulnerable to this problem.